Differential mechanism



. Pa te nted-Oct.

The present invention relates to'inechanism adapted to compensate for the differenceof j: p I i a speed between two driving ground engaglng To provideTadifferential meohanisni de- "v uo di idh lshx i" wheels of an automotive-vehicle and the ob- 5 jects thereof comprise the following desiderata: o I

To provide means to drive both wheels positively irrespective of Whether both said wheels or only one has for transmitting positive diiferentially-com trolled propulsion to both drive wheels when drive either'wheel when the other is'on c a loose ground; sand or the like,

a To provide in combination with a chambered carrierthat is concentric with the driven axles, a, diiferential mechanism revoluble with the carrier, sald mechanism compr sing 1 ;a dlsc element counterbored to journal annular floating from each side gears each of which is provided with a concentric outwarda ly-disposed spur pinion. Said counterbores @1325 being off-set in parallelism to provide a partition between than the length ofthe pinion face. These counterbores are "disposed suflicientlyeccencoinmodation provided in the partition. p The respective'driven'axles, which are disposed in true axial. alinement with each other,

I abut againstthe respective adjacent webs of 5 said annular gears and are each provided with apinion meshing-with its respective an novel arrangement of diiferenwhich permits differential nular gear, a 'tial elements '2: movement for rounding curves, pos1t1ve drive both axleswhen both have traction anddrive for either grorind-engaging V positive a wheel when the other is slipping.

' To provide adiiferential mechanism hav- 5 ing the fewest number of parts to manufaccan Ap plication filedilDeeember 19 30; V v I tractive contact with'l @510 the ground, In otherwords, to provide means j section "through a" ievge e I ,h ,h both have traction and means to positively i ffi gure 21s a s de elevation of the disc-like ano a tractive surface such as presented by mum? Figure 318a Section talc withs'aid pinion upp mo tthem which is slightlythicker GEORGE hormones, on ce'srnovxm ni'o LIronnm-f tune," and to" cause wear, or fieh se] friction 1 or to be lubricated. f g

particulai'lypointed' outfin the claims" and illustrated in the accompanying drawings made part of tl is'specification, in which "Flgure *llis' a view element;

Figure 4& is a side s I lnternal gear with aconcentric'pinionextend- 111g outwardlytherefromg Figure 5'showsa plan" view o fFigure hi gl Figure 6 1s a side elevational view of' two' such gears as shown in Figure placed back? I to back with the *intermes'hing with each other.

' Similar 7 reference indicia; refer to similar parts'throughou't-the severalviews, r

In carrying out iiivention ;I provide the trio to'each other to allow said pinions toinesh Q pl fllfi ren f l QK Q adapted to house @5 0 with each otherwithin holes for their he}; he F 5? e e t?o g d ewree: he em'bl IlthBSCI'BWS 9:

The hubs concentric with the carrier. f;

1h longitudinal "mi was r 360 1evh hha1 "View or the extend outwardly fromfthe res'pective sides 9 ofthe'carrie'r and'journal the innerends of V the axlesQMand-Qb The'fconcentricfiange 3;

secured ,to'the". carrier.

peller shaft .ffIt war bejnoted h? Fig res v2 and, 3 that 'i the"disc"element*B5 which" is'an 'exact fit within the 7 carrier A," is provided with the holes 8 to accommodate? the fscrewsshown S aid gea in Figure 1 as looking said disc to rotate with said carrier, and also affording additional means to bind the respective members of the carrier together.

By further reference to Figures 2 and 3 it is seen that the disc B is provided with the recesses 10 and 11 set off from each other by the partition 12 which is suitably perforated at 13 and 14: to allow the respective pinions 15 and 16 to extend through said partition from opposite sides when said pinions areintermeshed, said recesses being suitably eccentric to each other to permit this arrangement of the pinions which is well Shown in Figure 1; wher in the driv pin a 17 and 18 fast to their respective axles 2a and 2b are shown in their axial relation to. the

memos 4:. In a dilferential mechanism, and in combination, a rotary carrier, means within the carrier and revoluble therewith comprising right and left hand recesess eccentric to said carrier and to each other; right and left hand internal annular gears mounted in the respective recesses of said carrier, a meshing concentric pinion on each gear, right and left hand axles extending into the carrier a driving means between said axles and their respective annular gears and means for rotating said carrier. i

In testimony whereof I affix my signature this 11th day of December, 1930.

-GEO-RGE RODRIGUES.

respective annular gears 19 and 20 with which I F g 6. s o the r ati p sit ns o both said gears and all said pi'nions, from which it will be clearly noted that by this novel arrangement of parts I am enabled to attain a i ferential drive for either said axle and a positive drive for either said axle irrespectlve of the tractive resistance opposed to the other,

It Will'benoted by Figure 1 that the annular gears 19 and 2Q are both alike and both provided with means as the webs 21 to carry their respective pinions 15 and 16 integrally and concentrically therewith, When rounding corners the novel arrangement. of

my differential mechanism permits automatic regulation of the speed ofrotatiOn of either said axle according tothe radius of v the, arc described.

From the foregoing it will be seen that I have invented a novel dififere ltial mechanism of great utility. I do not-claim a differential v mechanism bl-Qadly, but?- ,theelement,; pinions fixed on the axles respectively and engaging respectively with said annular gears; external pinions carried concentrically by said annular gears, said axles; extending into said carrier, apropeller- I pimons arranged to mesh with each other.

2. A dl-iferentlal mechanism comprislng a rotary carrier, two recesses wlth n the carrier, said recesses eccentric to the carrier andto each other, internal annular gears Journaled; 1n; the recesses of said 62111161, a pinion COIlIlQQhlOlZl; between. the mternal gears,

shaft for rotating said carrier; and a driving p nion b w n a d ann ar g ars; nd axlesin claim 1 respective seats, for the respective. flo tmg nnu r gea s an sp g mean a 3. In a difl'erential mechanism, as specified between said seats. 

